CF9 Install --> 500 on Administrator

After reviewing the logs, I have an odd issue that I am stumped on.

Clean JRE and clean CF install on laptop

xp pro, IIS 5.1, Coldfusion 9 developer edition

Installs great, all IIS settings added .cfm, cfc, cfr, cfml, etc installed in IIS mappings.

Default Docs added index.cfm

Done this many many times on many other computers without a problem, but today on this computer, I get a 500 error when attempting to open administrator.

Logs all look fine too (server.log below).

What am I mssing? Any suggestions?

serverlog snippet:

"Information","main","09/15/11","18:32:21",,"Starting logging..."
"Information","main","09/15/11","18:32:21",,"Starting license..."
"Information","main","09/15/11","18:32:22",,"Invalid ColdFusion 9 license."
"Information","main","09/15/11","18:32:22",,"Invalid ColdFusion 9 license."
"Information","main","09/15/11","18:32:22",,"Developer Edition enabled"
"Information","main","09/15/11","18:32:23",,"Starting crypto..."
"Information","main","09/15/11","18:32:23",,"Installed JSafe JCE provider: Version 3.6 RSA Security Inc. Crypto-J JCE Security Provider (implements RSA, DSA, Diffie-Hellman, AES, DES, Triple DES, DESX, RC2, RC4, RC5, PBE, MD2, MD5, RIPEMD160, SHA1, SHA224, SHA256, SHA384, SHA512, HMAC-MD5, HMAC-RIPEMD160, HMAC-SHA1, HMAC-SHA224, HMAC-SHA256, HMAC-SHA384, HMAC-SHA512)"
"Information","main","09/15/11","18:32:23",,"Starting security..."
"Information","main","09/15/11","18:32:23",,"Starting scheduler..."
"Information","main","09/15/11","18:32:23",,"Starting WatchService..."
"Information","main","09/15/11","18:32:23",,"Starting debugging..."
"Information","main","09/15/11","18:32:23",,"Starting sql..."
"Information","main","09/15/11","18:32:23",,"Starting mail..."
"Information","main","09/15/11","18:32:24",,"Starting runtime..."
"Information","main","09/15/11","18:32:24",,"CORBA Configuration not enabled"
"Information","main","09/15/11","18:32:24",,"Starting cron..."
"Information","main","09/15/11","18:32:24",,"Starting registry..."
"Information","main","09/15/11","18:32:24",,"Starting client..."
"Information","main","09/15/11","18:32:26",,"Starting xmlrpc..."
"Information","main","09/15/11","18:32:27",,"Starting graphing..."
"Information","main","09/15/11","18:32:27",,"Starting verity..."
"Information","main","09/15/11","18:32:27",,"Starting solr..."
"Information","main","09/15/11","18:32:27",,"Starting archive..."
"Information","main","09/15/11","18:32:27",,"Starting document..."
"Information","main","09/15/11","18:32:27",,"Starting eventgateway..."
"Information","main","09/15/11","18:32:28",,"Starting FlexAssembler..."
"Information","main","09/15/11","18:32:28",,"Starting .NET..."
"Information","main","09/15/11","18:32:28",,"Starting Monitoring..."
"Information","main","09/15/11","18:32:28",,"ColdFusion started"

</endsnippet>